. Diseases of the nervous system : for the general practitioner and student. pinatus interferes with the act of raising the arm, also permitsthe head of the humerus to lose its firm position in the glenoid muscles eventually atrophy. Pain is frequent and anaesthesia overthe scapula is present. Treatment.—Same as above. (c) Circumflex Nerve (from fifth and sixth cervical roots).—It suppliesthe deltoid and teres minor muscles; also the skin over the deltoid and thearticulation. 420 DISEASES OF SPINAL NERVES Etiology.—Injury, dislocation and contusion of the shoulder, compres-sion (cru
. Diseases of the nervous system : for the general practitioner and student. pinatus interferes with the act of raising the arm, also permitsthe head of the humerus to lose its firm position in the glenoid muscles eventually atrophy. Pain is frequent and anaesthesia overthe scapula is present. Treatment.—Same as above. (c) Circumflex Nerve (from fifth and sixth cervical roots).—It suppliesthe deltoid and teres minor muscles; also the skin over the deltoid and thearticulation. 420 DISEASES OF SPINAL NERVES Etiology.—Injury, dislocation and contusion of the shoulder, compres-sion (crutch), lead poisoning, grippe, diabetes, finally exposure to coldare the usual causes of palsy. Symptoms.—The function of the deltoid muscle is to elevate the paralysis abolishes almost all power of raising the arm. The atrophyof the muscle changes the shape of the shoulder. Anaesthesia is presentover the skin covering the muscle. Adhesions may form in the jointand produce ankylosis. Reactions of degeneration appear quite early,except in cases of Fig. 135.—Paralysis or Serratus Magnus. Position of Scapula when Arm is Elevation of Arm is Impossible. (Starr.) (d) Musculo-Cutaneous Nerve (from fifth, sixth, also seventh roots).—It supplies the biceps and brachialis anticus, also the skin over the radialside of the forearm. —Trauma, pressure, dislocation or fracture of the head ofthe humerus are the usual causes of palsy. Symptoms.—Paralysis of the flexors of the forearm is the chief symp-tom. It is particulary marked when the arm is supinated. Atrophyand RD. develop rapidly. There is also anaesthesia on the outer side of theforearm. (e) Musculo-Spiral Nerve (from sixth, seventh and eighth roots).—It supplies the triceps, supinators and extensors of the hands and fingers;the skin of the lower half of the arm, of the back of the forearm, also ofthe dorsum of the thumb and of the first three fingers. Etiology.—The supe
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Keywords: ., bookcentury1900, bookdecade1910, booksubjectnervous, bookyear1913
